Plant Structure What is the source of free energy (ΔG) for moving protons out of mitochondria against their concentration and electrical gradients? ATP The redox reactions of electron transport Creatine phosphate Glycolysis ATP The redox reactions of electron transport Creatine phosphate Glycolysis ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Any system that is not at equilibrium is thermodynamically unstable, although it may be kinetically stable is kinetically unstable, although it may be thermodynamically stable is rushing toward equilibrium at a very rapid rate requires an enzyme to reach equilibrium is thermodynamically unstable, although it may be kinetically stable is kinetically unstable, although it may be thermodynamically stable is rushing toward equilibrium at a very rapid rate requires an enzyme to reach equilibrium ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Which of the following experimental results does not support Mitchell's chemiosmosis theory? Electron transport in isolated mitochondria was shown to result in acidification of the medium Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium Electron transport in isolated mitochondria was shown to result in acidification of the medium Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Chemical energy is supplied to eukaryotic cells by mitochondria and ribosomes mitochondria only chloroplasts and golgi complexes mitochondria and chloroplasts mitochondria and ribosomes mitochondria only chloroplasts and golgi complexes mitochondria and chloroplasts ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential? Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions None of these Electrons always go from reductants with high redox potentials to oxidants with low redox potentials The rules governing oxidation and reduction apply only in vitro, and not in vivo Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions None of these Electrons always go from reductants with high redox potentials to oxidants with low redox potentials The rules governing oxidation and reduction apply only in vitro, and not in vivo ANSWER DOWNLOAD EXAMIANS APP
Plant Structure Which of the following statements about the outer mitochondrial membrane is not true? The outer membrane is highly permeable to substances of small molecular weight The outer membrane is impermeable to hydrogen ions The outer membrane is about 50% lipid and 50% protein by weight The outer membrane contains porins The outer membrane is highly permeable to substances of small molecular weight The outer membrane is impermeable to hydrogen ions The outer membrane is about 50% lipid and 50% protein by weight The outer membrane contains porins ANSWER DOWNLOAD EXAMIANS APP
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